Product comparison · 2 internal hard drives

Seagate Savvio ST1200MM0017-20PK internal hard drive vs Seagate Constellation ST91000640NS-20PK internal hard drive

21specifications compared
10differ
11identical
8known for one product only

Key differences

The Seagate Savvio ST1200MM0017-20PK internal hard drive has 0.2 TB more HDD capacity than the Seagate Constellation ST91000640NS-20PK internal hard drive (1.2 TB vs 1 TB). The Seagate Savvio ST1200MM0017-20PK internal hard drive has 2,800 RPM more HDD speed than the Seagate Constellation ST91000640NS-20PK internal hard drive (10000 RPM vs 7200 RPM). The Seagate Savvio ST1200MM0017-20PK internal hard drive has 1" more HDD size than the Seagate Constellation ST91000640NS-20PK internal hard drive (3.5" vs 2.5"). Interface: SAS on the Seagate Savvio ST1200MM0017-20PK internal hard drive, Serial ATA III on the Seagate Constellation ST91000640NS-20PK internal hard drive. Operating voltage: 5 / 12 V on the Seagate Savvio ST1200MM0017-20PK internal hard drive, 5 V on the Seagate Constellation ST91000640NS-20PK internal hard drive.

HDD capacity
- Savvio ST1200MM0017-20PK internal hard drive:1.2 TB
- Constellation ST91000640NS-20PK internal hard drive:1 TB
HDD speed
- Savvio ST1200MM0017-20PK internal hard drive:10000 RPM
- Constellation ST91000640NS-20PK internal hard drive:7200 RPM
HDD size
- Savvio ST1200MM0017-20PK internal hard drive:3.5"
- Constellation ST91000640NS-20PK internal hard drive:2.5"
Interface
- Savvio ST1200MM0017-20PK internal hard drive:SAS
- Constellation ST91000640NS-20PK internal hard drive:Serial ATA III
Average latency
- Savvio ST1200MM0017-20PK internal hard drive:2.9 ms
- Constellation ST91000640NS-20PK internal hard drive:4.16 ms
Power consumption (idle)
- Savvio ST1200MM0017-20PK internal hard drive:4.6 W
- Constellation ST91000640NS-20PK internal hard drive:3.31 W
Operating voltage
- Savvio ST1200MM0017-20PK internal hard drive:5 / 12 V
- Constellation ST91000640NS-20PK internal hard drive:5 V
Operating temperature (T-T)
- Savvio ST1200MM0017-20PK internal hard drive:5 - 55 °C
- Constellation ST91000640NS-20PK internal hard drive:5 - 60 °C

Side by side

Differences highlightedShow differences only

Comparison of ST1200MM0017-20PK, ST91000640NS-20PK
29 specifications	A Seagate Savvio ST1200MM0017-20PK internal hard drive Model ST1200MM0017-20PK View product	B Seagate Constellation ST91000640NS-20PK internal hard drive Model ST91000640NS-20PK View product
Features5 differ
HDD capacityDiffers	1.2 TB	1 TB
HDD speedDiffers	10000 RPM	7200 RPM
HDD sizeDiffers	3.5"	2.5"
InterfaceDiffers	SAS	Serial ATA III
HDD number of cylindersKnown for one	4	Unknown — not stated by the source
HDD number of headsKnown for one	8	Unknown — not stated by the source
Average latencyDiffers	2.9 ms	4.16 ms
Read seek timeKnown for one	Unknown — not stated by the source	8.5 ms
Write seek timeKnown for one	Unknown — not stated by the source	9.5 ms
Mean time between failures (MTBF)Known for one	Unknown — not stated by the source	1400000 h
Power2 differ
Power consumption (idle)Differs	4.6 W	3.31 W
Operating voltageDiffers	5 / 12 V	5 V
Start-up currentKnown for one	0.51 A	Unknown — not stated by the source
Power consumption (typical)Known for one	Unknown — not stated by the source	5.21 W
Operational conditions2 differ
Operating temperature (T-T)Differs	5 - 55 °C	5 - 60 °C
Storage temperature (T-T)Known for one	-40 - 70 °C	Unknown — not stated by the source
Operating shockDiffers	40 G	70 G
Weight & dimensions1 differ
WeightDiffers	204 g	200 g

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

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